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The pri ncipal difference between this microsystem and the standard CMS2000 and CDS3000 families is that the primary curr ent conductor is not part of the system anymo re. 3. Prototype of the universal current sensor as a dual in-line SMD component. Th e system is sensitive to a magnetic field difference produced by an external Ushap ed current conductor plac ed above or below the sensor (not show n here) . 8mm ceramic substrate . Both the sensor chip and the ASI C are the sam e as the ones used in the CDS3000 produ cts .

7. Prototy pe of a universal c urrent sensor clippe d in a slot of a straig ht conductor. Here the conductor is desig ned fo r ca rrying a nomin al current of 200A. Magnetic ield F Sensor Flexible Substrate Bus Bar MagneticField Fig. 8. Ope rating principle of the current slot measurement syste m . Two absolute mag netic field sensor chips are placed on eac h side of the slot. 4 Conclusions Starti ng from the existing product families CMS2000 and CDS3000, a universal magneto resistive (MR) current sensor microsystem for the measu rement of high currents in automotive applications has been developed .